1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aksik [14]
3 years ago
14

Find the sum. (−a^3+4a−3)+(5a^3−a)

Mathematics
1 answer:
aev [14]3 years ago
5 0

Answer:

4a³+3a-3

Step-by-step explanation:

You can solve this by combining like terms. Add the numbers with the correct exponents together.

-a³+5a³

4a-a

Thus, the answer is

4a³+3a-3

You might be interested in
Bill claims that he found the actual December temperature by adding either –5 + 3 or 3 + –5
nika2105 [10]
Are you telling us? This doesn't sound like a question.
3 0
3 years ago
Read 2 more answers
You recently sent out a survey to determine if the percentage of adults who use social media has changed from 66%, which was the
il63 [147K]

Answer:

The 98% confidence interval estimate of the proportion of adults who use social media is (0.56, 0.6034).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

Of the 2809 people who responded to survey, 1634 stated that they currently use social media.

This means that n = 2809, \pi = \frac{1634}{2809} = 0.5817

98% confidence level

So \alpha = 0.02, z is the value of Z that has a pvalue of 1 - \frac{0.02}{2} = 0.99, so Z = 2.327.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5817 - 2.327\sqrt{\frac{0.5817*4183}{2809}} = 0.56

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5817 + 2.327\sqrt{\frac{0.5817*4183}{2809}} = 0.6034

The 98% confidence interval estimate of the proportion of adults who use social media is (0.56, 0.6034).

6 0
2 years ago
1 × 6,391 _____<br><br> 0.1 × 6,391 ____<br><br> 0.01 × 6,391 _____
Cerrena [4.2K]

1.= 6,391  

2.=6,3910

3. = 6,39100

All you do is add the 0s at the end


5 0
3 years ago
Please help ! thanks ! :)
Rufina [12.5K]

Answer:

a) is B because it inrease quite rapidly and then slowly increase

b) is c as it increase and then decreases quite soon and rapid and then increase quite rapidly again

Step-by-step explanation:

4 0
3 years ago
Emily runs a hotel. She wants to hold a party in the banquet hall of her hotel. The hall has a size of 120,000 square feet. By f
alexira [117]

Answer:

480 People.

Step-by-step explanation:

120,000(0.004) = 480

5 0
3 years ago
Other questions:
  • Edgar has a birdbath that holds 2 gallons of water. he only wants to fill it 3/4 full. how much water, in gallons, should edgar
    13·2 answers
  • David made a line plot of how many miles he biked each day for two weeks. How many miles did he bike in all?​
    10·1 answer
  • A pancake recpe calls for 1/2 cup of milk and 3/4 Of a cup of flour.If you multiply the recipe by 5 how much flour will you need
    14·1 answer
  • 3. Jared has two ropes. Each rope is 9 inches long. How many inches of rope does he have in all?
    14·2 answers
  • A pinecone drops from a tree branch that is 20 feet above the ground. The function h = –16t2 + 20 is used. If the height h of th
    8·1 answer
  • Which is the correct algebraic expression after combining like terms? 6 c d + 3 c minus 7 d minus 3 c d + 4 d + one-third c 3 c
    14·2 answers
  • For which independent value do the equations generate the same dependent value? y1 = 6x + 10 Y2 = 4x+4
    11·1 answer
  • Noah works at a concession stand selling bags of popcorn and cans of soda. A bag of popcorn costs $2.50 and a can of soda costs
    6·1 answer
  • Write an exponential function to model each situation. Find each amount after the
    14·1 answer
  • One month Justin rented 3 movies and 5 video games for a total of $39. The next month he rented 9 movies and 7 video games for a
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!